*** FedEx Changelog ***
2026-07-20 - version 4.6.1
* Fix - Liftgate special services are now only added to Freight (FDXF) rate requests, preventing SERVICE.PACKAGECOMBINATION.INVALID errors on non-Freight (Express, Ground, and SmartPost) requests.
* Fix - Retry transient transport failures (cURL timeouts, connection resets) in the FedEx REST API client before returning an empty rate list.